Flow Battery Competition

Are flow batteries a low-cost long-term energy storage technology?

In an August 2024 report “Achieving the Promise of Low-Cost Long Duration Energy Storage,” the U.S. Department of Energy (DOE) found flow batteries to have the lowest levelized cost of storage (LCOS) of any technology that isn’t geologically constrained. DOE estimates that flow batteries can come to an LCOS of $0.055/kWh.

Are flow batteries paying off?

That work seems to be paying off. In an August 2024 report “Achieving the Promise of Low-Cost Long Duration Energy Storage,” the U.S. Department of Energy (DOE) found flow batteries to have the lowest levelized cost of storage (LCOS) of any technology that isn’t geologically constrained.

What is a flow battery?

Flow batteries, energy storage systems where electroactive chemicals are dissolved in liquid and pumped through a membrane to store a charge, provide a viable alternative. VRFBs are the most developed and commercially available type of flow battery currently available on the market.

Could flow batteries be the world's largest battery project?

Most recently, a 500 MW flow battery project – which would make it the world’s largest – was announced in Switzerland. Flow batteries’ scalability and safety make them ideal options for backup power, particularly in utility markets prone to extreme weather or public safety power shut offs (PSPS).

Are flow batteries a competitor to lithium-ion?

Flow batteries that use domestically produced organic material would change the calculus and emerge as true competitors to lithium-ion. What has made it hard is that organic materials typically degrade quickly under strong reducing or oxidizing conditions – in other words, when charging and discharging a battery.

Why are flow batteries so popular?

Flow batteries have the potential for long lifetimes and low costs in part due to their unusual design. In the everyday batteries used in phones and electric vehicles, the materials that store the electric charge are solid coatings on the electrodes.